Apple Seeds First Beta of Upcoming macOS Catalina 10.15.3 Update to Developers - MacRumors
Skip to Content

Apple Seeds First Beta of Upcoming macOS Catalina 10.15.3 Update to Developers

by

Apple today seeded the first beta of an upcoming macOS 10.15.3 update to developers for testing purposes, one week after releasing the macOS Catalina 10.15.2 update.

The new ‌‌macOS Catalina‌‌ beta can be downloaded using the Software Update mechanism in System Preferences after installing the proper software from the Developer Center.

macos catalina wallpaper
We don't yet know what improvements the third update to macOS Catalina will bring, but it will likely focus on performance improvements, security updates, and fixes for bugs that weren't able to be fixed in the macOS Catalina 10.15.2 update.

If we find anything new in the first macOS Catalina 10.15.3 update, we'll update this article.

Related Forum: macOS Catalina

Top Rated Comments

84 months ago
Even if I was ready to invest time into migrating off applications that are 32-bit, the bugs still make Catalina look like a hot mess. I really hope they can get their act together and squish these bugs.
Score: 3 Votes (Like | Disagree)
luvbug Avatar
84 months ago
I returned my new mbp 16" today. I figured if I was going to have to wait several more months for a Catalina update and graphics driver that are actually production quality, I might as well just return it and wait for the next hardware update. Perhaps by then, Apple may actually get their OS sh*t together. And it sure seems to me, lately, that iCloud services a bit unstable at times. I'm thinking the complex iCloud services interactions are starting to be an issue (inter-service dependencies and latency).
Score: 3 Votes (Like | Disagree)
hoyhoy Avatar
84 months ago
The photo and music syncing from Finder is CRAZYTOWN. It basically doesn't even work at this point. Photos on iOS is totally unusable now. There's the album bug mentioned above (I assume he meant nested albums, because that's still broken), random duplications, missing Photos. Music syncing is busted too. Album art is missing. Tracks aren't syncing. I'm seriously about to roll back to High Sierra if they're just going to break features that have worked since 2005 until now. Also, has anyone noticed that if you crop a screenshot on iOS, the cropped version only persists 20% of the time? This is literally the WORST iOS/macOS release I have ever seen.
Score: 3 Votes (Like | Disagree)
84 months ago
Does it include a fix for Apple's Mail Data Loss problem :rolleyes: Apple, this is very bad and needs an emergency fix! :mad:
Score: 3 Votes (Like | Disagree)
84 months ago
One more update and it might be time to seriously consider Catalina
Score: 2 Votes (Like | Disagree)
nutmac Avatar
84 months ago
macOS features marked for spring release:

Communication Limits
Communication Limits let you control who your children can communicate with and who can communicate with them throughout the day and during downtime.

iCloud Drive folder sharing
You can now share folders with a private link. Anyone who has access can see the folder in iCloud Drive, add new files, and get the latest versions of files.

Neither seem to be on this build.
Score: 2 Votes (Like | Disagree)

Popular Stories

Apple Event Logo

Apple's Next Era Begins September 1

Thursday May 7, 2026 10:36 am PDT by
Apple recently announced that Tim Cook will be stepping down as CEO later this year, after 15 years of leading the company. Effective September 1, Apple's hardware engineering chief John Ternus will become the company's next CEO, while Cook will become executive chairman of Apple's board of directors. In his new role, Apple said Cook will assist with "certain aspects" of the company,...
Four iPhone 18 Pro Colors Mock Feature

iPhone 18 Pro Launching in September With These 10 New Features

Saturday May 9, 2026 6:03 am PDT by
While the iPhone 18 Pro and iPhone 18 Pro Max are not launching until September, there are already plenty of rumors about the devices. It was initially reported that the iPhone 18 Pro models would have fully under-screen Face ID, with only a front camera visible in the top-left corner of the screen. However, the latest rumors indicate that only one Face ID component will be moved under the...
Apple Watch Series 10 Jet Black Touch ID

Apple Watch Series 12 and watchOS 27: What to Expect Later This Year

Friday May 8, 2026 2:07 pm PDT by
While not too much has been reported about the next Apple Watch models, there are a few rumors about potential design changes and watchOS 27 features. Apple Watch Series 12 and Apple Watch Ultra 4 models are expected to be released in September, and we have outlined some of the key rumored hardware and software changes below. A new Apple Watch SE is not expected this year, as that model was...